/Engine/Source/Editor/PinnedCommandList/Public/IPinnedCommandList.h
If usingFUICommandList_Pinnablecustom widget interactions will be automatically forwarded to the pinned commands list, butFUICommandList_Pinnable::OnCustomWidgetInteractiondoesneed to be called when widgets are interacted with to automatically add the custom widget to the pinned commands list.
class IPinnedCommandList : public [SCompoundWidget](API\Runtime\SlateCore\Widgets\SCompoundWidget)